Pan-type liquid fuel burner for tobacco curers



Feb 7, 1950 c. w. CRITCHFIELD PAN-TYPE LIQUID FUEL BURNER FOR TOBACCO CURERS 2 Shets-Sheet 1 Filed June 6, 1946 INVENTOR.

ATTD RN EYE I Feb. 7, 1950 c. w. CRITCHFIELD 2 9 7 PAN-TYPE LIQUID FUEL BURNER FOR TOBACCO CURERS Filed June 6, 19 46 2 Sheets-Sheet 2 o 30 30 lb C Z mg L I I I ,1 1 W I 1 1r v N ll i 1 l INVENTOR. V 6%1223 wi rizcg/z'eZd ATTORNEYS Patented Feb. 7, 1950 UNITED PAN-TYPE LIQUID FUEL BURNER FG'R 'ronaoco oUREns Charles w. crntnfila, Alma, Ga.

Application June 6, Serial No. 674,729

This invention relates to a tobacco curer which is especially designed to be used in wood burning furnaces that are used at the present time for curing tobacco.

An object of this invention is to provide a curer that uses fuel oil, kerosene or Diesel oil for the operation thereof.

This curer has a decided advantage over the old type of curer that uses wood, since the curer must be hand fed, requiring considerable time on the part of the user thereof, but the present invention contemplates a curer having a fuel reservoir that will automatically feed the fuel to the curer as desired.

With the above and other objects and advantages in view, the invention consists of the novel details of construction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawings in which:

Figure 1 is an elevational view of an embodiment of the invention in use with a wood burning furnace;

Figure 2 is a top plan view of the curer;

Figure 3 is a side view partly in section;

Figure 4 is a sectional view on the line 4-4 of Figure 2; Figure 5 is an end view on the line 5-5 of Figure 2;

Figure 6 is a sectional view on the line 6-6 of Figure 2;

Figure '7 is an end view of the jet valve;

Figure 8 is a sectional view thereof and Figure 9 is a perspective view of the curer.

Referring more in detail to the drawings, the reference numeral i0 designates the curer which comprises the draft channel [2 having a top and sides but an open bottom.

Secured to the forward end of the channel H on the opposite sides thereof are the channel guides l4 which are adapted to slidably receive the draft door [6, having the side flanges l8 which retain the door in sliding relation to the channel l2 but prevent lateral movement thereof, and handles 20 are provided for the raising and lowering of the door for ventilation purposes.

Secured to the opposite end of the channel I! by welding 22 or the like is the fire box 24 having a top, closed end and sides but an open bottom,

and a square shaped opening 26 in the top thereof is adapted to receive the oil pan 28 which is supported on the top by means of the diverging arms 3|], one on each upper marginal edge thereof.

The pan is smaller than the opening 26, so

1 Claim. (Cl. 158-91) 2 that an air space is provided between the pan and the top of the fire box.

The pan 28 is provided with an overflow outlet pipe 32 and a supply pipe 34 having a valve 36 therein for the control of fuel to the pan, and both pipes extend longitudinally of the channel 1 l2 to emerge therefrom through the elongated parallel slots 38 in the door I6.

The end of the pipe 34 within the pan is provided with an orifice 40 which comprises 0pposed vertical slots, and the pipe is threaded to receive the threaded plug 42 which controls the flow of oil from the pipe into the pan.

In Figure l is shown a setup which includes the brick wood burning furnace 44 with the curer l0 installed therein and a fuel tank 46 on a support 48 and connected to the supply pipe 34. The tank is elevated by the support so that the fuel is fed to the pan by gravity.

Thus a curer has been provided that will maintain a constant temperature in the furnace, thus 1 providing more uniformly cured tobacco, and a curing the tobacco. The orifice begins the preliminary cracking of the fuel oil, which is completed in the pan, air being supplied through the space between the pan and fire box for proper combustion which is indicated by the blue flame about the edge of the pan.

It is believed that the construction and operation of the curer will be apparent to those skilled in the art, and it is to be understood that changes in the minor details of construction, arrangement and combination of parts may be resorted to, provided they fall within the spirit of the invention and the scope of the appended claim.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

A burner of the type described, comprising an elongated draft channel member having a closed top and sides, and open ends and an open bottom, a fire box of larger cross section than said draft channel member adapted to telescopically receive one open end of the draft channel member, said fire box having a central opening in the top thereof, an oil pan receivable in the opening,

right angularly disposed diverging arms on said pan at the upper edge thereof adapted to rest on the top of the fire box for supporting the pan within the opening in the fire box, and the opening in the fire box being larger than the pan to form an air space about the pan, overflow and supply pipes connected to said oil pan and a closure at the opposite open end of the draft channel member for regulating the supply of air to saidfire box.

CHARLES W. CRITCHFIELD.

REFERENCES CITED i Number The following references are of record in the' file of this patent: 

